Cousins Sam and Nancy De Bruin are new kids at Timespan High School, and are about to learn they have more than schoolwork to worry about when they discover they own a magic coin that allows them to travel back in time. Join Sam and Nancy when they are sent back to seventeenth-century Holland to find the secret of two magic jewels that have a mysterious tie to their families. Danger lurks at every corner, and the cousins have to keep their wits about them if they are to succeed with the mission This fast-paced adventure, that brings the Golden Age of Holland alive, welcomes any reader into a most unique period of time when the Dutch merchants ruled the day and even a single tulip could be bartered for a city block Full of twists and turns, this exciting book will keep the reader guessing until the very end.